If the timing belt broke while the engine was running, it’s likely there is extensive damage to the valves.
That’s because the pistons and valves share the same space, and the belt normally prevents them from hitting each other.
Exceptions were so-called non-interference engines, but I don’t think they’ve been made lately.
So, before going to the trouble and expense of a new timing belt, try to find out if there is other damage.
It won’t be cheap, possibly fatal.
The moral is to change the belts within the recommended period.
Unlike chains, belts run silently and give no warning of impending destruction.